Self defense device



FIG. 1 is a perspective view of a self defense device showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view of the side opposite to that shown in FIG. 4;

FIG. 6 is a front end view thereof; and,

FIG. 7 is a rear end view. 

The ornamental design for a self defense device, as shown and described. 